"We have asked local authorities and social housing providers to
identify whether any panels used in new build or refurbishment of
their own housing stock are a particular type of cladding made of
ACM.

"These checks will be relevant to privately owned and managed
residential buildings too, so please can you consider carrying
out these checks on your buildings."

Cladding testing laboratory working "24/7"

Buildings over six storeys, or 18 metres, high are being
prioritised. Landlords need to submit two, 250 x 250mm samples of
the cladding from their buildings. Tests are being carried out by
the Building Research Establishment, which works for the DCLG on
fire investigations.

A DCLG spokeswoman said the Building Research Establishment
laboratory is working "24/7" to turn around cladding tests amid
fears other high-rise developments could be vulnerable to a
Grenfell-style blaze. She was unable to comment on how much the
free testing initiative will cost.

Earlier on Thursday, Downing Street said it was "too early to
say" how many social housing residents are likely to be living in
unsafe towers after 600 were found to have flammable cladding.
The PM's spokesperson said it would be "irresponsible" to name
which buildings are affected until all residents have been
informed.